Leslie speaker

Named after its inventor, Donald Leslie, this rotating speaker is most commonly associated with the Hammond organ (it produces chorus, tremolo and vibrato effects). However, inspired by their engineer Geoff Emerick, The Beatles used it in all sorts of ways – John Lennon’s vocal on Tomorrow Never Knows was run though a Leslie, for example – so a plug-in version is a must for any wannabe. There are various options available, but we’ve picked out BetabugsAudio’s Spinbug, because it’s free.